Update nvidia-glx-driver to 470.86

Changes:

• Fixed a regression which prevented DisplayPort and HDMI 2.1 variable refresh rate (VRR) G-SYNC Compatible monitors from functioning correctly in variable refresh rate mode, resulting in issues such as flickering

Packaging note: Implemented ReillyBrogan's symlink improvement for libnvidia-vulkan-producer.so (See D12267)

Rebooted, launched Steam and played the free games "b" (Proton) and "Floating Point"